- A mark to designate the boundary of land; any , mark or
fixed object (as a marked tree, a stone, a ditch, or a heap of stones)
by which the limits of a farm, a town, or other portion of territory
may be known and preserved. - Any conspicuous object on land that serves as a guide;
some prominent object, as a hill or steeple.
Meaning of 'landmark' (Princeton's WordNet)
1 . landmark
[ n]
Meaning (1): - an event marking a unique or important historical change of course or one on which important developments depend
Example in sentence:
the agreement was a watershed in the history of both nations
Meaning (2): - the position of a prominent or well-known object in a particular landscape